@mixin border-1px($color){
	position:relative;
	&:after{
		display:block;
		position:absolute;
		left:0;
		bottom:0;
		width:100%;
		border-bottom:0.04347rem solid $color;
		content:'';
	}
}		

@mixin border-none(){
    &:after{
        display:none;
    }
}

@mixin bg-image($url){
	background-image:url($url+"@2x.png");
	background-size: 100%;
	@media(-webkit-min-device-pixel-ratio:3),(min-device-pixel-ratio:3){
		background-image:url($url+"@3x.png");
	    background-size: 100%;	
	}
}

@function r($px){
    $fontsize: 23;
    @return $px/2/$fontsize + rem;
}
